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1. 发明授权

US4460926A Time base correcting device for audio and video signals 失效
标题翻译：音视频信号时基校正装置
公开(公告)号：US4460926A
公开(公告)日：1984-07-17
申请号：US382837
申请日：1982-05-27
申请人： Shozo Nakamuta
发明人： Shozo Nakamuta
IPC分类号： H04N9/89 , H04N9/802 , H04N9/893 , H04N9/491
CPC分类号： H04N9/893 , H04N9/802
摘要： A time base correction device for use with a video disc reproduction system corrects the time base of the color video signal according to the phase difference between a reference signal and a color burst signal; and the time base of the audio signal is corrected according to the phase difference between a reference signal and a horizontal synch signal extracted from the video signal.
摘要翻译：与视盘再现系统一起使用的时基校正装置根据参考信号和色同步信号之间的相位差校正彩色视频信号的时基; 并且根据从视频信号提取的参考信号和水平同步信号之间的相位差校正音频信号的时基。

2. 发明授权

US4245245A Interactive CATV system 失效
标题翻译：交互式CATV系统
公开(公告)号：US4245245A
公开(公告)日：1981-01-13
申请号：US654721
申请日：1976-02-02
申请人： Katsuaki Matsumoto , Yoshifumi Saeki , Osamu Tazawa , Minoru Kosaka , Masaki Saito , Hiroki Uemura , Tetuo Kanazashi , Seiji Hashimoto , Tsuyoshi Fujiwara , Tsutomu Fukui , Saburo Takaoka , Tsutomu Suzuki , Shozo Nakamuta , Toshihiko Hosaka , Kuniaki Shiratori , Youichiro Tsuda , Takashi Morii , Sumitaka Matsumura , Morihisa Oka
发明人： Katsuaki Matsumoto , Yoshifumi Saeki , Osamu Tazawa , Minoru Kosaka , Masaki Saito , Hiroki Uemura , Tetuo Kanazashi , Seiji Hashimoto , Tsuyoshi Fujiwara , Tsutomu Fukui , Saburo Takaoka , Tsutomu Suzuki , Shozo Nakamuta , Toshihiko Hosaka , Kuniaki Shiratori , Youichiro Tsuda , Takashi Morii , Sumitaka Matsumura , Morihisa Oka
IPC分类号： H04N7/167 , H04N7/171 , H04N7/173 , H04N7/16 , H04N7/00
CPC分类号： H04N7/17309 , H04N7/17363 , H04N2007/17372
摘要： A two-way CATV system having a substantial number of terminals incorporates a central processor and transmitter system which continually interrogates the terminals at high speed, monitoring changes of usage of premium programs and other data while also permitting central control of access to restricted premium programs. For inexpensive but reliable intercommunication, short, fixed word length digital messages are frequency multiplexed onto the cable in both upstream and downstream directions, and subscriber groups are controllably selected in turn, with each subscriber being scanned in what may be an arbitrary order by transmission of unique private messages which are recognized at the terminal and in response to which previously prepared fixed length messages are immediately transmitted in return. By employing both upstream and downstream messages which are initiated by a series of synchronizing bits and non-ambiguously related subsequent data sequences, and by the provision of means to initiate both downstream and upstream messages of short length without delay, rapid but reliable data interchange is effected despite differences in transmission and response times with different subscribers. Concurrently, terminal status and various special conditions including security alarms are remotely processed at each terminal, and short upstream messages are assembled containing priority selected data to be transmitted in response to an interrogation. The system incorporates additional means for monitoring power status, program selection and authorization and other operating conditions at each terminal effectively to provide accurate and reliable accounting information while preventing unauthorized or improper usage of restricted premium programs.
摘要翻译：具有大量终端的双向CATV系统包括中央处理器和发射机系统，其以高速度连续询问终端，监视高级节目和其他数据的使用的改变，同时还允许对受限优惠节目的访问的中央控制。对于廉价但可靠的互通，短，固定字长数字消息在上行和下行两个方向上被频率复用到电缆上，并且用户组可以依次可控地选择，每个用户以任意顺序扫描可以通过传输在终端被识别并且响应于先前准备好的固定长度的消息被立即发送的唯一私人消息。通过采用由一系列同步位和非相关相关的后续数据序列发起的上行和下行消息，并且通过提供无延迟地启动短长度的下行和上行消息的装置，快速但可靠的数据交换是尽管与不同用户的传输和响应时间有差异。同时，终端状态和包括安全警报在内的各种特殊条件在每个终端进行远程处理，并且组合短的上游消息，其中包含响应于询问要发送的优先选择数据。该系统包括用于监控每个终端的电源状态，程序选择和授权以及其他操作条件的其他手段，有效地提供准确可靠的会计信息，同时防止未经授权或不正确使用限制性溢价程序。

3. 发明授权

US4550347A Method for recording information on a recording disc 失效
标题翻译：在记录盘上记录信息的方法
公开(公告)号：US4550347A
公开(公告)日：1985-10-29
申请号：US482725
申请日：1983-04-07
申请人： Shozo Nakamuta
发明人： Shozo Nakamuta
IPC分类号： G11B5/012 , G11B7/00 , G11B7/004 , G11B7/007 , G11B9/06 , G11B19/28 , G11B20/00 , G11B20/10 , G11B20/22 , G11B27/30 , H04N5/76
CPC分类号： G11B19/28 , G11B20/10 , G11B20/22 , G11B27/30 , G11B5/012 , G11B7/007 , G11B2220/20
摘要： In order to eliminate crosstalk and to provide a high recording density, a method for recording information on a recording disc includes a first step for forming a first portion of recording tracks in which the information signal is recorded on the recording disc under a condition that the angular velocity of rotation of the disc is constant and a space between each track has a first constant value. A second step in values forming a second portion of recording tracks in which the information signal is recorded on the recording disc under a condition that the angular velocity of rotation of the recording disc is varying and the space between each track has a second constant value that is greater than the first constant value. The first and the second portions of the recording tracks are formed alternately.
摘要翻译：为了消除串扰并提供高记录密度，用于在记录盘上记录信息的方法包括：第一步骤，用于形成记录轨道的第一部分，其中信息信号被记录在记录盘上，条件是盘的旋转角速度是恒定的，并且每个轨道之间的空间具有第一恒定值。形成记录轨道的第二部分的值的第二步骤，其中在记录盘的旋转角度变化并且每个轨道之间的间隔具有第二常数值的条件下将信息信号记录在记录盘上，大于第一个常数值。记录轨道的第一和第二部分交替地形成。

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